These really look like they were taken for tourism promotion ads.
Betty Jackson, 16, Sarnia, Ontario Yacht Club, 1949
Britton Danard pins apple blossoms in Betty Dixon’s hair in a
Niagara Peninsula orchard near St. Catharines, Ontario, 1949
On the rocks along the shore of Lake Nipissing, Ontario, July 1950
St. Lawrence Islands National Park, Ontario, 1949
Tourist camp at Kincardine, Ontario, 1949
Source: Yesterday's Print